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Finding the Fourth Proportional to 332,572.80, 498,859.20 and 208,156.80

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Solution

The fourth proportional to 332,572.80, 498,859.20 and 208,156.80 is: 312,235.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    332,572.80 : 498,859.20 = 208,156.80 : x
  2. Step 2: Convert to fraction form
    332,572.80/498,859.20 = 208,156.80/x
  3. Step 3: Cross multiply
    332,572.80x = 498,859.20 × 208,156.80
  4. Step 4: Simplify right side
    332,572.80x = 103,840,934,722.56
  5. Step 5: Solve for x
    x = 103,840,934,722.56/332,572.80
  6. Step 6: Final answer
    x = 312,235.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.